A shout-out for Tad Czapski, the electronics-wizard of the 90's and 00's. He was lured into F1 by Tom Walkingshaw as he was strengthening the electronics capabilities of the team in the era of active suspension, automatic transmissions, ABS and traction control. These were banned after 1993, but infamously Benetton still had the launch control as a hidden "option 13" for 1994. At Benetton, Czapski's laptop and Schumacher's car (and only Schumacher's...) were inseperable on the grid before the start of races. The result: two titles in 1994 and 1995.
Czapski was part of the Benetton team that left for Ferrari in 1996. The opposition of the Newey-Renault / Newey-Mercedes combo's proved too much in the following years despite brave battles and again - link - rumours of illegal traction control. After finaly achieving their goal of the WDC/WCC in 2000, Czapski went back to Benetton where he masterminded the launch control -now legalized- of the Renault's in which Alonso took his two titles.
At the end of 2009 he partnered once again with Ross Brawn, joining Mercedes for the following season. I can't find how long he stayed with them and whether he had any involvement in their string of titles from 2014. His Benetton / Ferrari / Renault successes add up to 5 WDC's and 5 WCC's.